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CVE-2026-53784: CWE-59 Improper Link Resolution Before File Access ('Link Following') in RsyncProject rsync

0
High
VulnerabilityCVE-2026-53784cvecve-2026-53784cwe-59
Published: 08/13/2026 (08/13/2026, 14:34:22 UTC)
Source: CVE Database V5
Vendor/Project: RsyncProject
Product: rsync

Description

rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.

CVSS v4.0

Score 8.4high

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Affected software

GitHub Actionsmore threats →cve
rsync
pkg:github/rsync
Affected versions
<=3.4.4

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Data Version
5.2
Assigner Short Name
VulnCheck
Date Reserved
2026-06-10T20:14:32.826Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a7ddec3bf8831d5395cfc33

Added to database: 08/13/2026, 15:12:03 UTC

Last updated: 08/13/2026, 15:12:03 UTC

Views: 1

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